Answer:
65
Step-by-step explanation:
13(13-3)/2 = 65 diagonals.
Answer:
<em>Answer: B. XY</em>
Step-by-step explanation:
<u>Lines and Circles</u>
There are four lines in the figure:
OB =Radius: A segment from the center to the circumference
XY = Secant: A line that intersects the circle in two points
EF = Chord: A line segment that joins two points on the circle
XV and XB = Tangent: A line that touches the circle on one point and is perpendicular to the radius.
Answer: B. XY
Answer: 31
Step-by-step explanation:
This is solved Using the theory of sets.
Teachers in Albers school = 44
Teachers in Bothel school = 74
Let the number of teachers that work in both schools be denoted as "x"
This implies that:
Number of teachers in Albers only = 44 - x
Number of teachers in Bothel only = 74 - x
And total number of teachers in both schools = 87,
then
x + (44-x) + (74-x) = 87
118 -x = 87
31 = x
This means the number of teachers that teach in both schools = 31.